Quiz · The Northern Lights

Question 1What does this talk mainly explain to listeners?

Why winters near the North Pole are so cold What causes the colourful northern lights in the sky How travellers can reach Iceland and Norway Why the sun has storms on its surface

Question 2According to the talk, which gas makes a soft green light?

Nitrogen Hydrogen Oxygen Carbon

Question 3According to the talk, when is the best time to watch the northern lights?

During a warm summer evening Just before a storm arrives On a cloudy winter afternoon On a clear and dark night